Plastic Injection Materials—Moisture Content

 

Plastic code

dry temp

dry time

initial moisture

proper moisture

heat wind

dehumidity

general plastics

ABS

80 ℃ ~

2hr

0.2~0.4%

0.07%

PS

70~80 ℃

1~2hr

0.1~0.2%

0.07%

 

PE

60~80 ℃

1~2hr

0.1~0.2%

0.07%

 

PP

60~80 ℃

1~2hr

0.1~0.2%

0.07%

 

PVC

60~80 ℃

1~2hr

0.1~0.2%

0.07%

 

PMMA

80~90 ℃

3 hr~

0.2~0.4%

0.07%

 

             
Engineering plasssstics

PA

80 ℃ ~

4~6 hr

2.0% ~5.0%

0.1%

X

PC

120 ℃ ~

2~4 hr

0.1~0.2%

0.02%

PBT

130 ℃ ~

3~4 hr

0.2~0.4%

0.02%

PET

130 ℃ ~

4~5 hr

0.2~0.4%

0.02%

POM

80 ℃ ~

2 hr~

0.2~0.4%

0.02%

PPS

130~180 ℃

1~3 hr

0.1~0.2%

0.05%

PES

180 ℃

3 hr~

0.4%~

0.05%

X

PEEK

150 ℃

3 hr~

0.5%~

0.06%

X

mPPO

80~100 ℃

2~4 hr

0.1%~

0.02%

○ : Fit ◎ :best fit X: nonconformity △ : warm keeping

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